Pull GN @ 252040, update calls

tools/gn/function_exec_script.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/process/kill.h"
 #include "base/process/launch.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 260 matching lines @@
     "      (Optional) A list of files that this script reads or otherwise\n"
     "      depends on. These dependencies will be added to the build result\n"
     "      such that if any of them change, the build will be regenerated and\n"
     "      the script will be re-run.\n"
     "\n"
     "      The script itself will be an implicit dependency so you do not\n"
     "      need to list it.\n"
     "\n"
     "Example:\n"
     "\n"
-    "  all_lines = exec_script(\"myscript.py\", [some_input], \"list lines\",\n"
-    "                          [ rebase_path(\"data_file.txt\", \".\","
-    "                                        root_build_dir) ])\n"
+    "  all_lines = exec_script(\n"
+    "      \"myscript.py\", [some_input], \"list lines\",\n"
+    "      [ rebase_path(\"data_file.txt\", root_build_dir) ])\n"
     "\n"
     "  # This example just calls the script with no arguments and discards\n"
     "  # the result.\n"
     "  exec_script(\"//foo/bar/myscript.py\")\n";
 
 Value RunExecScript(Scope* scope,
                     const FunctionCallNode* function,
                     const std::vector<Value>& args,
                     Err* err) {
   if (args.size() < 1 || args.size() > 4) {
@@ skipping 112 matching lines @@
                msg);
     return Value();
   }
 
   // Default to None value for the input conversion if unspecified.
   return ConvertInputToValue(output, function,
                              args.size() >= 3 ? args[2] : Value(), err);
 }
 
 }  // namespace functions